<?php
	$thumb_id = get_post_thumbnail_id( $post->ID );
	if ( $thumb_id != null ) :
		$thumb_src = wp_get_attachment_image_src( $thumb_id, 'full' );
?>
<div class="entry-thumb">
	<a href="<?php the_permalink() ?>" rel="bookmark">
		<img src="<?php echo $thumb_src[0] ?>" title="<?php the_title(); ?>"/></a>
</div>
<?php 
	endif;
?>